<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hAdd(1,'0')">添加权限</el-button>
        </div>
        <el-table row-key="id" border :data="list">
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template #default="{row}">
              <el-button v-if="row.type === 1" type="text" @click="hAdd(2,row.id)">添加</el-button>
              <el-button type="text" @click="hEdit(row)">编辑</el-button>
              <el-button type="text" @click="hDel(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
      <el-dialog :visible.sync="showDialog" :title="isEdit?'编辑':'添加'" @close="resetForm">
        <!-- 表单内容 -->
        <el-form ref="formRef" :model="formData" :rules="formRules" label-width="100px">
          <el-form-item label="权限名称" prop="name">
            <el-input v-model="formData.name" />
          </el-form-item>
          <el-form-item label="权限标识" prop="code">
            <el-input v-model="formData.code" />
          </el-form-item>
          <el-form-item label="权限描述" prop="description">
            <el-input v-model="formData.description" />
          </el-form-item>
          <el-form-item label="权限启用">
            <el-switch
              v-model="formData.enVisible"
              active-text="启用"
              active-value="1"
              inactive-text="不启用"
              inactive-value="0"
            />
          </el-form-item>
        </el-form>

        <template #footer>
          <div style="text-align: right;">
            <el-button @click="showDialog = false">取消</el-button>
            <el-button type="primary" @click="hSubmit">确定</el-button>
          </div>
        </template>
      </el-dialog>
    </div>
  </div>
</template>

<script>
import { getPermissionList, addPermission, delPermission, updatePermission } from '@/api/permissions'
import { tranDataToTree } from '@/utils'
export default {
  data() {
    const validName = (rule, value, callback) => {
      // console.log('value', value)
      let existNameList = this.originList.filter(item => item.pid === this.formData.pid).map(item => item.name)
      if (this.isEdit) {
        existNameList = this.originList.filter(item => item.pid === this.formData.pid).filter(item => item.id !== this.formData.id).map(item => item.name)
      }
      console.log(existNameList, 'existNameList')
      existNameList.includes(value) ? callback(new Error('名称不能重复')) : callback()
    }
    const validCode = (rule, value, callback) => {
      let existCodeList = this.originList.map(item => item.code)
      if (this.isEdit) {
        existCodeList = this.originList.filter(item => item.id !== this.formData.id).map(item => item.code)
      }
      console.log(existCodeList, 'existCodeList')
      existCodeList.includes(value) ? callback(new Error('权限标识不能重复')) : callback()
    }
    return {
      originList: [],
      isEdit: false,
      list: [], // 权限列表
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      formRules: {
        name: [
          { required: true, message: '不能为空', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ], // 名称
        code: [
          { required: true, message: '不能为空', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ] // 权限标识

      }
    }
  },
  created() {
    // 进入页面触发加载
    this.loadPermissionList()
  },
  methods: {
    // 确认修改
    async doEdit() {
      try {
        await updatePermission(this.formData)
        this.showDialog = false
        this.loadPermissionList()
        // console.log('updatePermission', res)
        // 保存数据
      } catch (err) {
        console.log('updatePermission', err)
      }
    },
    // 编辑权限
    hEdit(data) {
      // console.log(row)
      this.isEdit = true
      this.formData = { ...data }
      this.showDialog = true
    },
    // 删除权限
    hDel(id) {
      this.$confirm('确认删除吗?').then(async() => {
        await delPermission(id)
        this.loadPermissionList()
      }).catch((error) => { console.log(error) })
    },
    // 重置数据到初始值
    resetForm() {
      this.$refs.formRef.resetFields()
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
    },
    // 封装确认添加
    async doAdd() {
      try {
        const res = await addPermission(this.formData)
        // 重新渲染页面
        this.loadPermissionList()
        // 关闭弹层
        this.showDialog = false
        console.log('addPermission', res)
        // 保存数据
      } catch (err) {
        console.log('addPermission', err)
      }
    },
    // 提交表单
    hSubmit() {
      // 兜底校验
      // 发送请求
      this.isEdit ? this.doEdit() : this.doAdd()
    },
    // 弹层复用
    hAdd(type, pid) {
      this.formData.type = type
      this.formData.pid = pid
      this.isEdit = false
      this.showDialog = true
    },
    // 加载权限列表
    async loadPermissionList() {
      try {
        const res = await getPermissionList()
        // console.log('getPermissionList', res)
        this.originList = res.data.map(item => {
          return { id: item.id, pid: item.pid, code: item.code, name: item.name.trim() }
        })
        // console.log(this.originList, '-----------')
        this.list = tranDataToTree(res.data)
      // 保存数据
      } catch (err) {
        console.log('getPermissionList', err)
      }
    }
  }
}
</script>
